A cargo agent works in the freight industry, either in rail or air transportation. Your main duty is to inspect all cargo before it can be sent out for delivery. Your responsibilities also include reviewing documentation of all materials, ensuring that tariffs and codes have been paid or met, and providing assistance in adjusting, shipping, or finding missing cargo. You document all cargo that runs through your facility, and you enter information into spreadsheets or other shipping software so that it is easily traceable.